last_window_closed_observer.h    8 ash/system/chromeos/session/last_window_closed_logout_reminder.h #include "ash/system/chromeos/session/last_window_closed_observer.h"
last_window_closed_observer.h   30 ash/system/tray/system_tray_notifier.h #include "ash/system/chromeos/session/last_window_closed_observer.h"